[bazel] Enable sksl for skottie_tool_cpu

It is a little surprising that skottie_tool_cpu compiled
fine without sksl enabled (which was not intended).

Bug: skia:12541
Change-Id: I67459f7ec31e348c615c8adbc162af83a2b632c9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/566880
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Jorge Betancourt <jmbetancourt@google.com>
Reviewed-by: Florin Malita <fmalita@google.com>
2 files changed